Shredder-type pulverizing hammer



'to novel hammering Iatvented *.luly i.

- UNITED STATES PATENT `ol-*Flca WILLIAM at. rayon, E sfr.' Leurs,HissoRLAssIGN-on'ro `soncrHEai IANGANESE STEEL coMrANY, or sr. LOUIS,mssonnl, A coRroRATIoN or DELAWARE.

. sHREnDEn-TYPE rULvEnrzfrNo HAMMER.

Applicatin filed inne i0,

The vinvention pertains to hammers for pulverizing machines, and moreparticularly or bea-ting elements adapted to beattac d particularly tothef reels of an ore mill or pulverizing machine.

Difficulty has beenencountered in the usual ore machines providing .ahammer of such character that will force the crushed material throughthe grates so. that there will be no tendency of packing thel materialon the grates if said material is crushed Vto when damp. In manyinstances, it is desirable that a particular kind of reducing element beprovided for a peculiar kind or shape of ore, and itis of courseimpractical to have' reducing elements of different shapes be`substituted for other elements in an ore machine.

It is therefore an object to provide a novel,l convenientandainexpensive hammer for ore machines which will elfectively performore pulverizing functions.

Another object is to provide va hammer havin faces adapted toprogressively contact tiie material to be pulverized. m Still anotherobject is to provide a vhammer of such character that it may be readilyreversed after some facesare worn to present unworn faces to thematerial acted on by the hammer. A further object is to provide a toolhaying cutting ridges separated anddisposed 1n such a manner as Ito oieradditional striking edges to the material to be acted on to there` byincrease the working eiliclency of the hammer.

Other and more specific objects will readily occur from the detaileddescription, claims and drawings appended hereto.

In the drawings, whereinl like Areference characters are used todesignate like parts`,.

Figure 1 is a 'partial sectional elevation, through an ore machine,'showingthe appllcation of the present. invention to the reel thereof; v

Figure 2 is a side elevation on an enlarged scale of the improvedhammer;

Figure 3 is a sectional end elevation of Figure 2, taken betweentheattaching armsv of the hammer; and

u Figure 4 is a bottom plan view of Fig-l ure2. e-

An ore machine 10 ott the usual type 1s provided with a longitudinalshaft 11 to` which the reels 12 are keyed. The ends of 1927. serial No.1971300.l

these `.reels may be bifurcated and have pivoted thereto the improvedhammer 13, pivoted by any means such as pins 14 passing through thebifurcated arms of the reels and through a hole 18 provided in the arm17. The bottom of the machine is provided with a pluralityof grate bars15 having portions so spaced that the` crushed or pulverlzed ore willpasstherethrough.

yThe particular hammer 13, which is the sub'ect-matter of thisinvention, is formed wit 'a base portion 16 having spaced parallelopstanding arms 17 provided at either end thereof, said arms beingprovided with aligned holes 18 which, as already described,

are adapted to recei-ve the pivot 14. The

'base-is formed having a pluralityof stepped ridges, said ridges beingshallower ad'acent the sides `of'the base and being gra uated t`o deeperrldges adjacentA the center. In other words, ridges 19,.2( )and 21 are'ro# gressively remote from wall 25 connec ing sides of j the hammer.These ridges are separated by slots orgrooves 22,23 and 2'4-respectively, said slots being in overlapping or staggered relation toslotsv between adjacent ridges.. ItA will be seen that, the corners ofthese slots provided in the striking end offer an additional strikingfedge which-basa tendencyto" increase the4 crushing effect of the hammer.Y

It `willreadily be appreciated that the old hammer ofthe slotted typebecomes rounded and offers merely `a crushing efect, but with thishammer, due `to the disposition' of the videdas well as a crushingeffect, which is very desirable as it has a reducing effect on theVmaterial no matter what peculiar shape this material may take. A hammerhaving a plurality of faces of such character also more readily stirs upthe material in the bot'- tom ofthe machine casing, causing the materialto sift through the gratesl in spite of any'moisture therein whichvmaytend to cake or pack the materialin the bottom of said casing.

I do not wlsh to be limited by the exact embodiment shown, which ismerely by way of illustration and not limitation, yas other and variousyembodiments will of course be apparent to those skilled in theV art.

I claim:

series of stepped fades, slots provided in lprovided in said article anddisposed between each row., the slots of one row being in overlappingrelation to the slots in other rows.

4. As an article of manufacture, a hammer including a series of rows ofstepped faces. graduated to dispose the deepest row at the centerthereof, a series of slots provided in said article and disposed betweeneach row, the slots of one row being disosed in overlapping relation tothe slots mother rows, and attaching arms for said article. i l

5. In a device of the character described. the combination of a basehaving teeth, said teeth being in stepped relation to each otherandfseparated by slots, and spaced attach ving arms formed on said base.

6. In a device of the character described, the combination of a basehaving ridges thereon, said ridges being separated by slots disposedtherebetween.

7 In a device of the character described, the combination of a basehaving ridges thereon, said ridges being shallower adjacent each sidethan in the middle, said ridges being graduated from said edge to saidmiddle ridges.

8. In a device of the character described, the combination of a basehaving ridges thereon, said ridges being shallower adjacent each sidethan in the middle. said ridges being graduated from said edge to saidmiddle ridges, and slots provided'in said device separating saidridges.A

9. In a device of the character described, the combination of a basehaving ridges thereon, said ridges being shallower adjacent each sidethan in the middle, said ridges being graduated from said edge to saidmiddle ridges, and a plurality of slotsv disposed in said device betweenridges.

10. In adevice of the character described, the combination of a basehaving ridges thereon, said ridges being shallower adjacent each sidethan in the middle, said ridges being graduated from s/aid edge to saidat intervals along middle ridges, and a plurality of slots disposed insaid device vbetween ridgesfsaid slots being in staggered relation withslots between other pairsof ridges.

11. In a device of the character described, the combination of a basehaving ridges thereon, said ridges being shallower adjacent each sidethan in the middle, said ridges being graduated from said edge to saidmiddle ridges, a plurality of slots disposed in said device betweenridges, said slots being in overlapping relation with slots betweenother pairs of ridges.I and spaced aligned arms provided on said baradapted to cooperate with an operating mechanism, saidv arms beingpivoted to said mechanism along an axis parallel to said ridges.

12. A hammer including stepped striking elements, said elements having agreater depththan the distance between the striking faces of saidelements.

13. A hammer including stepped striking elements, said elements having agreater depth than the distance between tbe striking faces of saidelements. and means on said hammer for securing said hammer to a reel.

14. A hammer including stepped striking elements,y said elements beinginterconnected the striking y surfaces thereof.

15. A hammer including stepped striking elements, said elements beinginterconnected along the striking surfaces thereof, said elements havinga greater depth than the distance between said striking surfaces of saidelements.

16. A hammer including stepped striking elements, said elements beinginterconnected along the striking surfaces thereof, said elements havinga greater depth than the distance between said striking surfaces of saidelements, and means on said hammer for securing said hammer to a reel..A

17. A hammer including stepped striking elements, said elements beinginterconnected at staggered intervals along the striking surfacesthereof. i

18. A hammer including stepped striking elements, said elements beinginterconnected atstaggered intervals along the striking surfacesthereof, said elements having a greater depth than the distance betweensai striking surfaces of said elements.

Signed at St. Louis, Missouri, this 1st day of June, 1927.

WILLIAM M. PRYOR.

